89 Question Bank
Abhay Kr. Mishra Asst. Professor, Dept. of Computer Application, Maharaja College(V.K.S.U), Ara
4
th
sem.
(O.S)—2007-10
1.Discuss the role of OS as Resource Manager and Interface provider. Give brief
description of important types of OS.
2.What is PCB ? Discuss the different fields contained in PCB.
3.What is Banker’s Algorithm for Deadlock Prevention.
4.Discuss the Memory Management Concept of Paging with H/W Support.
5. Write short notes on the following:--
a) First Fit and Best Fit. b) Internal and External Fragmentation.
c) Compaction. d) Coalescion.
6.Discuss the concept of Virtual-Memory Implementation through Demand
Paging.
7.What is meant by Page Replacement Policies? List the Policies / Strategies.
Consider a reference string.
7,0,1,2,0,3,0,4,2,3,0,3,2,1,2,0,1,7,0,1.
Calculate the page faults and text ratio using FIFO , LRU, & Optimal Strategies.
8.Write short notes on the following:--
a).Steps of page fault handling.
b).Segmentation.
9.Discuss the concepts of Interrupt Driven I/O transfer and Direct Memory
Access(DMA).
10.Discuss the DISK scheduling policies of FCFS, SSTF & Scan scheduling. Give
suitable example.